DOUBLE ROW FIXATION SYSTEM, MEDIAL ROW ANCHOR PLACEMENT SYSTEM
An instrument is disclosed including: a top jaw member extending between a proximal end and a distal end and including a first top anchor target slot and a second top anchor target slot; a bottom jaw member extending between a proximal end and a distal end and including a first bottom anchor target slot and a second bottom anchor target slot; and a joint member connected to the proximal ends of the top jaw member and the bottom jaw member.
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The present application claims benefit of U.S. Provisional Application Ser. No. 60/946,012, filed Jun. 25, 2007, the contents of which are incorporated by reference herein in their entirety.
BACKGROUNDWhen soft tissue tears away from bone, reattachment becomes necessary. Various devices, including sutures alone, screws, staples, wedges, and plugs have been used in the past to secure soft tissue to bone.
Recently, various types of threaded suture anchors have been developed for this purpose. Some threaded suture anchors are designed to be inserted into a pre-drilled hole. Other suture anchors are self-tapping.
In repair of tissue attachments to bone, e.g. in the shoulder, techniques have been developed that vastly increase the repaired tissue to bone area resulting in a repair that more closely replicates the original structure. These repair techniques are commonly referred to as “double row fixation” and includes the typical edge repair location as well as an additional “medial row” of fixation using an additional, medially located (relative to the edge repair) set of suture anchors to secure tissue to bone.
Correct placement of the additional tissue anchors medial to the edge repair is often critical to the success of this repair technique. If the medial anchors are placed too medial in relation to the first row (i.e. too far medially inward from the tissue edge) damage can occur to the humeral head. Additionally, the relative placement of anchors is important. If the anchors are placed too close or far apart from each other, the strength of the repair may not add value to the overall reconstruction at the repair site.
SUMMARYThe inventors have realized that one may facilitate proper placement of suture anchors, e.g. medial row anchors in a “double row” repair. A “paddle style” grasper is structured to allow a desired depth of tissue bite while the width of the paddles are configured in such a way as to allow for fixation points to ideally spaced. With the grasper properly placed on the tissue, “punch through” suture anchors are deployed at the at “anchor targets” on the grasper paddles. A “punch tip” on the anchors pierce the tissue grasped by the grasper and penetrate, e.g., thread into adjacent bone tissue. With the anchors properly placed the grasper is removed, and sutures from the two anchors are attached to one another forming, e.g. a mattress style stitch to secure the tissue to the bone.
In one aspect, an instrument is disclosed including: a top jaw member extending between a proximal end and a distal end and including a first top anchor target slot and a second top anchor target slot; a bottom jaw member extending between a proximal end and a distal end and including a first bottom anchor target slot and a second bottom anchor target slot; and a joint member connected to the proximal ends of the top jaw member and the bottom jaw member.
In some embodiments, the top and bottom jaw members, in an open position, define an area for receiving a portion of tissue, and the joint member articulates the jaw members from the open position to a tissue engaging position where the top and bottom jaw members grasp the portion of tissue.
In some embodiments, the jaw members are in the tissue engaging position, the first top anchor slot and first bottom anchor slot are adapted to receive a first anchor extending into the first top anchor slot, through the portion of tissue, and out of the first bottom anchor slot.
In some embodiments, the jaw members are in the tissue engaging position, the second top anchor slot and second bottom anchor slot are adapted to receive a second anchor extending into the second top anchor slot, through the portion of tissue, and out of the second bottom anchor slot.
In some embodiments, the top jaw member and bottom jaw member each include a paddle extending along a longitudinal axis between the proximal end of the jaw member and the distal end of the jaw member, the paddle further extending along a transverse axis, transverse to the longitudinal axis, extending between a first side and a second side of the paddle.
In some embodiments, the first top anchor slot includes an aperture formed in the first side of the top jaw member paddle; the second top anchor slot includes an aperture formed in the second side of the top jaw member paddle; the first bottom anchor slot includes an aperture formed in the first side of the bottom jaw member paddle; and the second bottom anchor slot includes an aperture formed in the second side of the bottom jaw member paddle.
In some embodiments, the first top anchor slot and second top anchor slot are positioned at points substantially equidistant from the proximal end of the top jaw member; and the first bottom anchor slot and second bottom anchor slot are positioned at points substantially equidistant from the proximal end of the bottom jaw member.
In some embodiments, when the jaw members are in the tissue engaging position, the first top anchor slot is substantially aligned with the first bottom anchor slot along an axis substantially orthogonal to the transverse and longitudinal axes of the top and bottom jaw member paddles, and the second top anchor slot is substantially aligned with the second bottom anchor slot along an axis substantially orthogonal to the transverse and longitudinal axes of the top and bottom jaw member paddles.
In some embodiments, the tissue engaging position consists of the open position. Some embodiments include an endoscopic assembly including a grasping instrument the type described above. The assembly further includes a handle; a controller mounted on the handle; and a stem operatively connecting the controller to the instrument to selectively articulate the jaw members.
Some embodiments include a surgical cannula surrounding at leas a portion of the stem or the instrument.
In another aspect, a surgical kit is disclosed including a first and a second suture anchor. Each anchor includes a rigid punch tip portion having a first end adapted to penetrate through tissue and into bone and second end; and a suture portion extending from the second end of the punch tip portion. The kit also includes a grasper including: a top jaw member extending between a proximal end and a distal end and including a first top anchor target slot and a second top anchor target slot; a bottom jaw member extending between a proximal end and a distal end and including a first bottom anchor target slot and a second bottom anchor target slot; a joint member connected to the proximal ends of the top jaw member and the bottom jaw member.
The top and bottom jaw members, in an open position, define an area for receiving a portion of tissue, and the joint member articulates the jaw members from the open position to a tissue engaging position where the top and bottom jaw members grasp the portion of tissue.
When the jaw members are in the tissue engaging position, the first top anchor slot and first bottom anchor slot are adapted to receive a first anchor extending into the first top anchor slot, through the portion of tissue, and out of the first bottom anchor slot; and the second top anchor slot and second bottom anchor slot are adapted to receive a second anchor extending into the second top anchor slot, through the portion of tissue, and out of the second bottom anchor slot.
In some embodiments, the first top anchor slot includes an aperture formed in the first side of the top jaw member paddle; the second top anchor slot includes an aperture formed in the second side of the top jaw member paddle; the first bottom anchor slot includes an aperture formed in the first side of the bottom jaw member paddle; and the second bottom anchor slot includes an aperture formed in the second side of the bottom jaw member paddle.
In some embodiments, the first top anchor slot and second top anchor slot are positioned at points substantially equidistant from the proximal end of the top jaw member; and the first bottom anchor slot and second bottom anchor slot are positioned points substantially equidistant from the proximal end of the bottom jaw member.
In some embodiments, when the jaw members are in the tissue engaging position, the first top anchor slot is substantially aligned with the first bottom anchor slot along an axis substantially orthogonal to the transverse and longitudinal axes of the top and bottom jaw member paddles, and the second top anchor slot is substantially aligned with the second bottom anchor slot along an axis substantially orthogonal to the transverse and longitudinal axes of the top and bottom jaw member paddles.
In some embodiments the kit includes an anchor driver configured to engage the second end of the punch tip portion of at least one of the first and second anchors and drive the punch tip through tissue grasped by the grasper and into a portion bone located adjacent the bottom jaw member.
In some embodiments, the punch tip portion of each of the suture anchors includes a threaded tip, and the anchor driver is adapted to rotate and drive the at least one of the first and second anchors to bore into the portion of bone.
In some embodiments, the kit includes a suture welder including: a suture holding element adapted to receive the suture portions of the first and second suture anchors and place the suture portions in proximity to each other, a welding element adapted to apply energy to areas of the suture portions to at least partially fuse the suture portions to each other.
In some embodiments, the welding element includes a heater adapted to heat the suture portions.
In some embodiments, the welding element includes an ultrasound unit adapted to apply ultrasound energy to the areas of the suture portions to at least partially fuse the suture portions to each other.
In some embodiments, the suture welder further includes a tensioner adapted to apply tension to the suture portions.
In another aspect a method for securing a portion of tissue to an adjacent portion of bone is disclosed including providing a first and a second suture anchor each including a rigid punch tip portion having a first end adapted to penetrate through tissue and into bone and second end; a suture portion extending from the second end of the punch tip portion. The method includes providing a grasper including: a top jaw member extending between a proximal end and a distal end and including a first top anchor target slot and a second top anchor target slot; a bottom jaw member extending between a proximal end and a distal end and including a first bottom anchor target slot and a second top anchor target slot; a joint member connected to the proximal ends of the top jaw member and the bottom jaw member. The top and bottom jaw members, in an open position, define an area for receiving a portion of tissue, and the joint member articulates the jaw members from the open position to a tissue engaging position where the top and bottom jaw members grasp the portion of tissue.
The jaw members are in the tissue engaging position, the first top anchor slot and first bottom anchor slot are adapted to receive a first anchor extending into the first top anchor slot, through the portion of tissue, and out of the first bottom anchor slot.
When the jaw members are in the tissue engaging position, the second top anchor slot and second bottom anchor slot are adapted to receive a second anchor extending into the second top anchor slot, through the portion of tissue, and out of the second bottom anchor slot.
The method further includes grasping the portion of tissue between the top and bottom jaw elements such that the bottom jaw element is adjacent the bone; positioning first and second anchors proximal the first and second top anchor slots, respectively; driving the punch tip portions of first and second anchors, respectively, through the first and second top anchor slot, through the tissue, through the first and second bottom anchor slots, and into the bone; removing the grasper; and attaching the suture portions of the first and second anchors to each other to secure the tissue to the bone.
In some embodiments attaching the suture portions of the first and second anchors to each other includes: placing the suture portions in proximity to each other; applying energy to the suture portions to at least partially fuse the suture portions to each other.
In some embodiments, attaching the suture portions of the first and second anchors to each other includes tensioning the suture portions to secure the tissue to the bone.
In some embodiments, the energy includes thermal energy.
In some embodiments, the energy includes heat energy.
In some embodiments, the tissue includes a portion of a rotator cuff.
In some embodiments, the bone includes a portion of a humerous bone head.
Various embodiments may include any of the features described above, alone or in combination.
The foregoing will be apparent from the following more particular description of example embodiments of the invention, as illustrated in the accompanying drawings in which like reference characters refer to the same parts throughout the different views. The drawings are not necessarily to scale, emphasis instead being placed upon illustrating embodiments of the present invention.
Referring to
As shown, the jaw members 102, 104 are flat, paddle type jaws. Jaw members 102, 104 each include a pair of anchor target slots 108. As described in further detail below, anchor target slots 108 can be used to easily and reliably provide desired positioning of suture anchors used to secure tissue 105 to bone 110.
Paddle 100 may be constructed of any suitable material, e.g. biocompatible material including metal (e.g. stainless steel), plastic, polymers, and or other materials.
Anchor target slots 108 are formed as aligned pair of, e.g., semicircular apertures in the sides of the upper and lower jaw member paddles (Note that as used herein the term aperture indicates any open region through which a suture anchor may pass, any need not completely surround the anchor). The position of target anchors slots are chosen to correspond to a desired position for a pair of suture anchors 112. For example, as shown, target anchors slots 108 a placed such they are located a desired distance L from the edge of tissue 105 when the grasper has fully engaged the tissue. Accordingly, anchors 112 inserted at the target anchor locations will be placed at the correct distance medial the edge of tissue 105. Further anchor targets 108 are positioned distance W apart from each other on either side of jaw members 102, 104 Accordingly, anchors 122 inserted at the target anchor locations will be placed at the correct distance relative to each other. Of course, it is to be understood that other configurations may be used to provide any desired anchor placement.
Referring to
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In various embodiments, welder 122 may be any suitable welder, e.g. of the types available from Axya Medical, Inc. of Beverly, Mass., including those described in, U.S. Pat. No. 7,090,111, issued Aug. 16, 2006, U.S. Pat. No. 6,923,824, issued Aug. 2, 2005, U.S. Pat. No. 6,669,705, issued Dec. 30, 2003, U.S. Pat. No. 6,666,877, issued Dec. 23, 2003, U.S. Pat. No. 6,409,743, issued Jun. 25, 2002, U.S. Pat. No. 6,358,271, issued Mar. 19, 2002, U.S. Pat. No. 6,286,746, issued Sep. 11, 2001, U.S. Pat. No. 6,217,591, issued Apr. 17, 2001, U.S. Pat. No. 6,174,324, issued Jan. 16, 2001, U.S. Pat. No. 6,106,545, issued Aug. 22, 2000, U.S. Pat. No. 6,056,751, issued May 2, 2000, U.S. Pat. No. 5,964,765, issued Oct. 12, 1999, and U.S. Pat. No. 5,893,880, issued Apr. 13, 1999 the contents of each of which are incorporated by reference herein in their entirety.
Note that while the above examples show a grasper 100 featuring paddle type jaw members 102, 014 each having a pair of anchor target slots 108, any suitable jaw shape featuring and number of anchor target slots may be used. For a given embodiment, placement of the anchor target slots is determined by the desired positioning of the anchors to be implanted.
Referring to
As illustrated in
Anchor 112 includes flexible suture portion 118 extending from end 119, and secured to punch through portion 114. Suture portion 118 may be made of a material amenable to bonding through the application of heat or energy thereto such as, for example, nylon (polyamide), polypropylene, Dacron® (polyester), polyglycolic acid (PGA), polyglyconate, and polydioxanone. In some embodiments, rigid punch through portion 114 may also be made of such material. In such cases portion 114 may be bonded to portion 118 by the application by the application of heat or other energy (e.g. ultrasound energy). Other suitable methods of bonding can be used if for example, portion 114 is made of another material, such as stainless steel, titanium, or some other durable, non-degradable, biocompatible material.
The suture anchor 112 or parts thereof can be made of a bioresorbable material which will be resorbed after residing in a patient.
The suture welder 122 beneficially provides a fused stitch 14 an elongated material, such as a surgical suture 616, wherein the stitch has at least comparable strength to knotted stitches or loops closed by other means. The fused stitch gains its comparable strength from the properties of the fused layer of the stitch, as detailed more fully in U.S. Pat. No. 5,893,880, which is assigned to the assignee of the present disclosure and incorporated herein by reference.
In particular, the fused stitch is formed through a welding process in which portions of the suture segments are locally heated through the application of heat thereto until opposing portions melt. The melted portions are then pressed together in an overlapped joint and become fused. The joint includes a fused layer between and joining the first and second suture segments. The fused layer is fused material from the first and second suture segments and preferably is relatively thin and has a relatively large shear area compared to the suture segments. In some embodiments, the suture welder 122 facilitates the creation of such a fused portion by maximizing contact between the suture segments during welding.
The fused stitch produced by the suture welder 122 comprises one or more pieces of an elongated material, such as a surgical suture, or other material which is amenable to bonding through the application of heat thereto. Suitable materials for the elongated material include polymers, especially thermoplastic materials such as, for example, nylon (polyamide), polypropylene, DACRON®. (polyester), polyglycolic acid (PGA), polyglyconate, and polydioxanone. The elongated material can be made of a single strand of a substantially monofilamentous material, or it can comprise multiple strands forming a single suture. The multi-strands can be twisted, braided or otherwise interlinked to increase the density, and thus the strength, of the composite strand.
As noted above, in some embodiments, welder 122 may produce fused stitch 126 from suture portions 118 by applying other types of energy including ultrasound energy, radio frequency energy, chemical energy, optical energy, etc.
The techniques and devices disclosed herein may be used to fixate any suitable tissue to bone, including, but not limited to, muscle tissue, tendons, and ligaments.
The techniques and devices disclosed above may be used in treating human patients, veterinary patients, etc.
In the event that any technical definitions presented in this application conflict with any documents incorporated by reference, the definition found in the present application should be understood to hold.
While particular examples have been provided above, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the claims.
Claims
1. An instrument comprising:
- a top jaw member extending between a proximal end and a distal end and comprising a first top anchor target slot and a second top anchor target slot;
- a bottom jaw member extending between a proximal end and a distal end and comprising a first bottom anchor target slot and a second bottom anchor target slot; and
- a joint member connected to the proximal ends of the top jaw member and the bottom jaw member;
- wherein the top and bottom jaw members, in an open position, define an area for receiving a portion of tissue, and the joint member articulates the jaw members from the open position to a tissue engaging position wherein the top and bottom jaw members grasp the portion of tissue;
- wherein, when the jaw members are in the tissue engaging position, the first top anchor slot and first bottom anchor slot are adapted to receive a first anchor extending into the first top anchor slot, through the portion of tissue, and out of the first bottom anchor slot; and
- wherein, when the jaw members are in the tissue engaging position, the second top anchor slot and second bottom anchor slot are adapted to receive a second anchor extending into the second top anchor slot, through the portion of tissue, and out of the second bottom anchor slot.
2. The instrument of claim 1, wherein the top jaw member and bottom jaw member each comprise a paddle extending along a longitudinal axis between the proximal end of the jaw member and the distal end of the jaw member, said paddle further extending along a transverse axis, transverse to said longitudinal axis, extending between a first side and a second side of the paddle.
3. The instrument of claim 2, wherein the first top anchor slot comprises an aperture formed in the first side of the top jaw member paddle;
- the second top anchor slot comprises an aperture formed in the second side of the top jaw member paddle;
- the first bottom anchor slot comprises an aperture formed in the first side of the bottom jaw member paddle; and
- the second bottom anchor slot comprises an aperture formed in the second side of the bottom jaw member paddle.
4. The instrument of claim 3, wherein the first top anchor slot and second top anchor slot are positioned at points substantially equidistant from the proximal end of the top jaw member; and
- the first bottom anchor slot and second bottom anchor slot are positioned at points substantially equidistant from the proximal end of the bottom jaw member.
5. The instrument of claim 4, wherein, when the jaw members are in the tissue engaging position;
- the first top anchor slot is substantially aligned with the first bottom anchor slot along an axis substantially orthogonal to the transverse and longitudinal axes of the top and bottom jaw member paddles; and
- the second top anchor slot is substantially aligned with the second bottom anchor slot along an axis substantially orthogonal to the transverse and longitudinal axes of the top and bottom jaw member paddles.
6. The instrument of claim 1, wherein the tissue engaging position consists of the open position.
7. An endoscopic assembly including the instrument of claim 1, and further comprising:
- a handle; a controller mounted on the handle; a stem operatively connecting the controller to the instrument to selectively articulate the jaw members.
8. The endoscopic assembly of claim 7, further comprising a surgical cannula surrounding at leas a portion of the stem or the instrument.
9. A surgical kit comprising:
- a first and a second suture anchor each comprising
- a rigid punch tip portion having a first end adapted to penetrate through tissue and into bone and second end;
- a suture portion extending from the second end of the punch tip portion; and
- a grasper comprising:
- a top jaw member extending between a proximal end and a distal end and comprising a first top anchor target slot and a second top anchor target slot;
- a bottom jaw member extending between a proximal end and a distal end and comprising a first bottom anchor target slot and a second bottom anchor target slot;
- a joint member connected to the proximal ends of the top jaw member and the bottom jaw member;
- wherein the top and bottom jaw members, in an open position, define an area for receiving a portion of tissue, and the joint member articulates the jaw members from the open position to a tissue engaging position wherein the top and bottom jaw members grasp the portion of tissue;
- wherein, when the jaw members are in the tissue engaging position, the first top anchor slot and first bottom anchor slot are adapted to receive a first anchor extending into the first top anchor slot, through the portion of tissue, and out of the first bottom anchor slot; and
- wherein, when the jaw members are in the tissue engaging position, the second top anchor slot and second bottom anchor slot are adapted to receive a second anchor extending into the second top anchor slot, through the portion of tissue, and out of the second bottom anchor slot.
10. The kit of claim 9, wherein
- the first top anchor slot comprises an aperture formed in the first side of the top jaw member paddle;
- the second top anchor slot comprises an aperture formed in the second side of the top jaw member paddle;
- the first bottom anchor slot comprises an aperture formed in the first side of the bottom jaw member paddle; and
- the second bottom anchor slot comprises an aperture formed in the second side of the bottom jaw member paddle.
11. The kit of claim 10, wherein
- the first top anchor slot and second top anchor slot are positioned at points substantially equidistant from the proximal end of the top jaw member; and
- the first bottom anchor slot and second bottom anchor slot are positioned points substantially equidistant from the proximal end of the bottom jaw member.
12. The kit of claim 11, wherein, when the jaw members are in the tissue engaging position:
- the first top anchor slot is substantially aligned with the first bottom anchor slot along an axis substantially orthogonal to the transverse and longitudinal axes of the top and bottom jaw member paddles; and
- the second top anchor slot is substantially aligned with the second bottom anchor slot along an axis substantially orthogonal to the transverse and longitudinal axes of the top and bottom jaw member paddles.
13. The surgical kit of claim 9, further comprising:
- an anchor driver configured to engage the second end of the punch tip portion of at least one of the first and second anchors and drive said punch tip through tissue grasped by the grasper and into a portion bone located adjacent the bottom jaw member.
14. The surgical kit of claim 13, wherein the punch tip portion of each of the suture anchors comprises a threaded tip, and the anchor driver is adapted to rotate and drive the at least one of the first and second anchors to bore into the portion of bone.
15. The surgical kit of claim 13 further comprising a suture welder comprising:
- a suture holding element adapted to receive the suture portions of the first and second suture anchors and place said suture portions in proximity to each other; and
- a welding element adapted to apply energy to areas of the suture portions to at least partially fuse the suture portions to each other.
16. The surgical kit of claim 15, wherein the welding element comprises a heater adapted to heat the suture portions.
17. The surgical kit of claim 15, wherein the welding element comprises an ultrasound unit adapted to apply ultrasound energy to the areas of the suture portions to at least partially fuse the suture portions to each other.
18. The surgical kit of claim 12, wherein the suture welder further comprises a tensioner adapted to apply tension to the suture portions.
19. A surgical method for securing a portion of tissue to an adjacent portion of bone comprising:
- providing a first and a second suture anchor each comprising:
- a rigid punch tip portion having a first end adapted to penetrate through tissue and into bone and second end;
- a suture portion extending from the second end of the punch tip portion; and
- providing a grasper comprising:
- a top jaw member extending between a proximal end and a distal end and comprising a first top anchor target slot and a second top anchor target slot;
- a bottom jaw member extending between a proximal end and a distal end and comprising a first bottom anchor target slot and a second top anchor target slot;
- a joint member connected to the proximal ends of the top jaw member and the bottom jaw member;
- wherein the top and bottom jaw members, in an open position, define an area for receiving a portion of tissue, and the joint member articulates the jaw members from the open position to a tissue engaging position wherein the top and bottom jaw members grasp the portion of tissue;
- wherein, when the jaw members are in the tissue engaging position, the first top anchor slot and first bottom anchor slot are adapted to receive a first anchor extending into the first top anchor slot, through the portion of tissue, and out of the first bottom anchor slot; and
- wherein, when the jaw members are in the tissue engaging position, the second top anchor slot and second bottom anchor slot are adapted to receive a second anchor extending into the second top anchor slot, through the portion of tissue, and out of the second bottom anchor slot;
- grasping the portion of tissue between the top and bottom jaw elements such that the bottom jaw element is adjacent the bone;
- positioning first and second anchors proximal the first and second top anchor slots, respectively driving the punch tip portions of first and second anchors, respectively, through the first and second top anchor slot, through the tissue, through the first and second bottom anchor slots, and into the bone; removing the grasper; and
- attaching the suture portions of the first and second anchors to each other to secure the tissue to the bone.
20. The method of claim 19, wherein attaching the suture portions of the first and second anchors to each other comprises:
- placing the suture portions in proximity to each other; and
- applying energy to the suture portions to at least partially fuse the suture portions to each other.
21. The method of claim 20, wherein attaching the suture portions of the first and second anchors to each other comprises tensioning the suture portions to secure the tissue to the bone.
22. The method of claim 20, wherein the energy comprises thermal energy.
23. The method of claim 20, wherein the energy comprises heat energy.
24. The method of claim 19, wherein the tissue comprises a portion of a rotator cuff.
25. The method of claim 24, wherein the bone comprises a portion of a humerous skeletal bone head.
Type: Application
Filed: Jun 25, 2008
Publication Date: May 28, 2009
Patent Grant number: 8292902
Applicant:
Inventor: Paul Fenton (Marblehead, MA)
Application Number: 12/146,350
International Classification: A61B 17/04 (20060101); A61B 18/04 (20060101);